Alert archive / Texas / Tornado Watches in 2006

Tornado Watch 256

April 28, 20067 counties in Oklahoma; 45 counties in Texas

The Storm Prediction Center issued this tornado watch at Apr 28, 2006, 11:36 AM CDT for 7 counties in Oklahoma; 45 counties in Texas. It was in force for 9 hr.

The area

The outline as issued.

The facts

Issued
Apr 28, 2006, 11:36 AM CDT (16:36 UTC)
Expired
Apr 28, 2006, 9:00 PM CDT
In force
9 hr
Issued by
the Storm Prediction Center
Largest hail expected
3 in
Strongest gust expected
70 kt
All 52 counties

Comanche County, OK, Cotton County, OK, Greer County, OK, Harmon County, OK, Jackson County, OK, Kiowa County, OK, Tillman County, OK, Archer County, TX, Baylor County, TX, Borden County, TX, Brown County, TX, Callahan County, TX, Childress County, TX, Clay County, TX, Coke County, TX, Coleman County, TX, Concho County, TX, Cottle County, TX, Crosby County, TX, Dickens County, TX, Eastland County, TX, Fisher County, TX, Foard County, TX, Garza County, TX, Glasscock County, TX, Hall County, TX, Hardeman County, TX, Haskell County, TX, Howard County, TX, Irion County, TX, Jack County, TX, Jones County, TX, Kent County, TX, King County, TX, Knox County, TX, Mitchell County, TX, Motley County, TX, Nolan County, TX, Reagan County, TX, Runnels County, TX, Scurry County, TX, Shackelford County, TX, Stephens County, TX, Sterling County, TX, Stonewall County, TX, Taylor County, TX, Throckmorton County, TX, Tom Green County, TX, Upton County, TX, Wichita County, TX, Wilbarger County, TX, Young County, TX

The radar

The Dyess AFB radar (KDYX), 118 km from the middle of the area, began a volume at 16:36 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What SPC expected

The probabilities SPC published with the watch, for the watch area over its life.

Two or more tornadoes
50%
One or more EF2 to EF5 tornadoes
20%
Ten or more severe wind reports
30%
One or more gusts of 65 knots or more
30%
Ten or more severe hail reports
70%
One or more hailstones of 2 inches or more
50%
Six or more combined severe hail and wind reports
90%

Warnings issued inside it

45 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

IssuedProductOfficeCountiesLasted
Apr 28, 11:45 AM CDTSevere Thunderstorm WarningSJTCallahan, Taylor30 min
Apr 28, 12:19 PM CDTSevere Thunderstorm WarningSJTCallahan, Shackelford26 min
Apr 28, 12:26 PM CDTSevere Thunderstorm WarningSJTBrown16 min
Apr 28, 1:00 PM CDTSevere Thunderstorm WarningSJTColeman, Concho, McCulloch45 min
Apr 28, 1:08 PM CDTSevere Thunderstorm WarningSJTBrown37 min
Apr 28, 1:10 PM CDTSevere Thunderstorm WarningMAFScurry65 min
Apr 28, 1:28 PM CDTSevere Thunderstorm WarningLUBKing51 min
Apr 28, 1:58 PM CDTSevere Thunderstorm WarningLUBKent32 min
Apr 28, 2:06 PM CDTSevere Thunderstorm WarningSJTConcho24 min
Apr 28, 2:16 PM CDTSevere Thunderstorm WarningLUBStonewall44 min
Apr 28, 2:24 PM CDTSevere Thunderstorm WarningMAFGlasscock, Reagan52 min
Apr 28, 2:31 PM CDTSevere Thunderstorm WarningOUNFoard44 min
Apr 28, 2:31 PM CDTSevere Thunderstorm WarningSJTColeman, Runnels17 min
Apr 28, 2:55 PM CDTSevere Thunderstorm WarningSJTSterling35 min
Apr 28, 3:23 PM CDTSevere Thunderstorm WarningMAFMitchell59 min
Apr 28, 4:02 PM CDTSevere Thunderstorm WarningSJTNolan28 min
Apr 28, 4:26 PM CDTSevere Thunderstorm WarningSJTFisher, Nolan34 min
Apr 28, 4:34 PM CDTSevere Thunderstorm WarningSJTJones, Taylor26 min
Apr 28, 4:47 PM CDTSevere Thunderstorm WarningMAFReagan39 min
Apr 28, 4:54 PM CDTSevere Thunderstorm WarningSJTJones36 min
Apr 28, 5:01 PM CDTSevere Thunderstorm WarningOUNHarmon44 min
Apr 28, 5:04 PM CDTSevere Thunderstorm WarningSJTCoke, Nolan, Taylor26 min
Apr 28, 5:14 PM CDTSevere Thunderstorm WarningSJTSterling61 min
Apr 28, 5:24 PM CDTSevere Thunderstorm WarningOUNGreer51 min
Apr 28, 5:24 PM CDTSevere Thunderstorm WarningLUBStonewall39 min
Apr 28, 5:28 PM CDTSevere Thunderstorm WarningSJTHaskell, Jones, Shackelford47 min
Apr 28, 5:30 PM CDTSevere Thunderstorm WarningSJTNolan, Taylor45 min
Apr 28, 5:52 PM CDTSevere Thunderstorm WarningSJTCoke38 min
Apr 28, 5:55 PM CDTSevere Thunderstorm WarningLUBBriscoe, Hall51 min
Apr 28, 6:13 PM CDTSevere Thunderstorm WarningSJTJones, Shackelford32 min
Apr 28, 6:27 PM CDTSevere Thunderstorm WarningSJTCoke17 min
Apr 28, 6:36 PM CDTSevere Thunderstorm WarningLUBCottle39 min
Apr 28, 6:36 PM CDTSevere Thunderstorm WarningSJTHaskell24 min
Apr 28, 6:42 PM CDTSevere Thunderstorm WarningSJTShackelford33 min
Apr 28, 6:49 PM CDTSevere Thunderstorm WarningSJTRunnels, Taylor56 min
Apr 28, 7:02 PM CDTSevere Thunderstorm WarningFWDStephens58 min
Apr 28, 7:21 PM CDTSevere Thunderstorm WarningOUNHardeman39 min
Apr 28, 7:29 PM CDTSevere Thunderstorm WarningSJTCallahan61 min
Apr 28, 7:30 PM CDTSevere Thunderstorm WarningMAFReagan45 min
Apr 28, 7:49 PM CDTSevere Thunderstorm WarningOUNJackson41 min
Apr 28, 7:58 PM CDTSevere Thunderstorm WarningFWDPalo Pinto, Stephens62 min
Apr 28, 8:04 PM CDTSevere Thunderstorm WarningSJTIrion41 min
Apr 28, 8:13 PM CDTTornado WarningFWDPalo Pinto, Stephens47 min
Apr 28, 8:41 PM CDTSevere Thunderstorm WarningSJTIrion, Tom Green64 min
Apr 28, 8:51 PM CDTSevere Thunderstorm WarningFWDJack, Palo Pinto, Parker39 min

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

The nearest sounding before it

Amarillo Airport, TX (KAMA), launched 12:00Z, 4.6 hours before the alert went out and 257 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Amarillo Airport, TX at 12:00Z on 2006-04-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 434 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Amarillo Airport, TX at 12:00Z on 2006-04-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 230 square meters per square second.1939587897117Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
434 J/kg
Mixed-layer CIN
-251 J/kg
Mixed-layer LCL
719 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
230 m²/s²
0-3 km storm-relative helicity
219 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 28, 7:03 AM CDTMesoscale DiscussionSPCBeaver, Cimarron, Harper, Texas117 min
Apr 28, 10:23 AM CDTMesoscale DiscussionSPCBeckham, Custer, Ellis, Greer, Harmon, Jackson and 3 more97 min
Apr 28, 1:04 PM CDTMesoscale DiscussionSPCAtoka, Bryan, Carter, Choctaw, Coal, Jefferson and 5 more86 min
Apr 28, 6:07 PM CDTMesoscale DiscussionSPCCaddo, Carter, Comanche, Cotton, Garvin, Grady and 11 more53 min
Apr 28, 6:42 PM CDTTornado WatchSPCAtoka, Bryan, Carter, Coal, Comanche, Cotton and 11 more7 hr
Apr 28, 10:43 AM CDTMesoscale DiscussionSPCBorden, Crosby, Dawson, Garza, Glasscock, Howard and 8 more92 min
Apr 28, 1:13 PM CDTMesoscale DiscussionSPCBandera, Crockett, Edwards, Gillespie, Kerr, Kimble and 10 more62 min
Apr 28, 1:20 PM CDTMesoscale DiscussionSPCBriscoe, Cottle, Dickens, Floyd, Foard, Hall and 7 more85 min
Apr 28, 1:28 PM CDTTornado WatchSPCBandera, Blanco, Crockett, Edwards, Gillespie, Kendall and 13 more6 hr
Apr 28, 3:38 PM CDTMesoscale DiscussionSPCChildress, Coke, Cottle, Dickens, Fisher, Foard and 17 more2 hr
Apr 28, 3:42 PM CDTMesoscale DiscussionSPCBandera, Crockett, Edwards, Gillespie, Kendall, Kerr and 11 more2 hr
Apr 28, 6:18 PM CDTMesoscale DiscussionSPCBell, Bosque, Brazos, Brown, Burnet, Callahan and 42 more87 min

Nearby

Tornado Watches in Texas, 2006Tornado Watches in Oklahoma, 2006Every tornado watch in 2006

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.